(QUESTION SIX.) Can I have help with this, please?

6. 8+ =12. Points Two growth hormones are being studied. A random sample of :11 = 10 rats were given the first hormone and their average weight gain was II = 2.3 pounds with a sample standard deviation 31 = 0.4 pounds. A random sample of 112 = 15 rats were given the second hormone and their average weight gain was 32 = 1.9 pounds with a sample standard deviation 52 = 0.2 pounds. I t is assumed that the weight gain follows a normal distribution for both type of rats. a. [3 points} At 1% level of significance, does the above information indicate that the population average weight gain for the rats that received the rst hormone is higher? Show all the steps of Hypothesis testing. I). [3+1=4 points] Find a 90% confidence interval for "pl uz\". Explain the meaning of ( that is, interpret) the condence interval in the context of this